Ariel- Du have to change species in order to find the man of your dreams, even if he loves an evil sea witch, then, when Du get married (at age 16), get pregnant as soon as Du can and surprise your whole family Von coming back from your honeymoon with a baby (at age 17)!
Giselle- Trusting an old hag to grant Du a wish won't do Du any harm, then, ask a stranger to let Du sleep in his house! Oh, and make sure to infest his house with squirrels.
Belle- Even if your boyfriend locks Du in his house, then pushes Du to the ground, it means he loves you!
Esmeralda- It won't hurt anyone's feelings if Du decide to KISS an injured soldier right in front of the sweet guy who would die for you.